Re: [MW:31986] ASME B31.3_2018- Table 331.1.1-PHWT minimumn Holding Time for base material thk-75mm

Why they segregated as group and in which basis ?

On Thu, 4 Feb 2021, 08:31 Anban, <gane2478@hotmail.sg> wrote:

Dear Experts

Need your guidance in understanding  PWHT minimum  Holding Time base material thk.-65 ~ 75mm

P-No. 1, Group Nos. 1–3

Minimum Holding Time at Temperature for Control Thickness [Note (2)]

-Up to 50 mm (2 in.)-1 h/25 mm (1 hr/in.);15 min min.

-Over 50 mm (2 in.)-2 hr plus 15 min for each additional 25 mm (in.)

Best Regards

Ganesan

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